Telemetria - Albertotti, G.; Antonelli, A.; Ascher, Karl W.; Beard, George M.; Berger, Emil; Berger, G. Oscar, b. 1862; Burckhardt, Fr.; Burnett, Swan M.; Classen, A.; Duane, Alexander; Bois-Reymond, C. du; Elschnig, Anton; et al. (In-house reproduction)